body{
  padding: 0;
}
nav{
  height: 100px;
}
#ddd{
  margin-left: 240px;
}
#bbb{
  margin-left: 200px;
}
#bbb>li>a{
  display: block;
  width: 104px;
  height: 100px;
  text-align: center;
  line-height: 100px;
  padding: 0;
  font-size: 16px;
  color: black;
}
#bbb>li>a:hover{
  background:#2d8cf0;
  color: aliceblue;
  text-decoration: none;
}
#aaa{
  margin-left: 100px;
}
#ccc ul{
  display: none;
  position: absolute;
  left: -40px;
  list-style-type: none;
}
#ccc:hover ul{
  display: block;
  z-index: 1;
}
#ccc ul li a{
  text-decoration: none;
}
#ccc ul li a:hover{
  color: #2d8cf0;
}
#ccc ul li a{
  width: 100px;
  height: 30px;
  display: block;
  text-align: center;
  line-height: 30px;
  background-color: black;
  color: aliceblue;
}

.a{
  padding:0;
  position: relative;
}
.a img{
  width: 100%;
}
/* .navbar-brand img{
  margin-left: 400px;
} */
.b{
  position: absolute;
  top:50%;
  left:50%;
  height: 100px; 
  margin-left: -150px;
  margin-top: -100px; 
  color: aliceblue;
  font-size: 18px;
}
.b span{
  font-size: 2em;
}


.d{
  height: 300px;
  margin-top: 150px;
}
.d ul{
  list-style-type: none;
}
.d ul li{
  display: inline-block;
  width: 230px;
  height: 150px;
  text-align: center;
  border-right:rgba(0,0,0,0.2) solid 1px ;
}
.d ul li>div{
  margin-top: 30px;
}
.d1{
  width: 30px;
  height: 5px;
  background: rgb(100, 136, 235);
  margin:10px 0px 0px 95px;
  display: none;
}
.d5 .d1{
  display: block;
}
.d2{
  margin: 10px 0px 0px -5px;
}
.d3{
  width: 700px;
  height: 100px;
  margin: 0 auto;
  margin-top: 100px;
}
.d3 div{
  font-size: 16px;
  position: relative;
  /* display: none; */
}
.e{
  width: 30px;
  height: 5px;
  margin: 0 auto;
  margin-top: 80px;
  margin-bottom: 100px;
  background: rgb(100, 136, 235);
}
.f{
  padding: 0;
}
.f ul{
  margin-top: 50px;
  list-style-type: none;
  display: flex;
  display: -webkit-flex;
  flex-wrap: wrap;
  justify-content: space-between;
}
.f ul li{
  width: 194px;
  height: 140px;
  text-align: center;
  line-height: 140px;
  position: relative;
}
.f3,.f4{
  position: absolute;
  top: 0px;
  left: 0;
}
.f3{
    display: none;
}



.g{
  height: 370px;
  background: rgb(64,64,64);
  margin-top: 60px;
}
.g1{
  margin:80px auto 0px;
  display: flex;
  display: -webkit-flex;
  justify-content: space-between;
}
.g1 div{
  padding: 0;
}
.g1 span,.g1 a{
  color: rgba(255,255,255,0.6);
}
.g1 a:hover{
  text-decoration: none;
  color: rgb(87, 135, 238);
}
#g2{
  color: aliceblue;
  font-weight: bold;
  font-size: 20px;
}
.g3{
  width: 250px;
  border-right: rgba(255,255,255,0.6) solid 1px;
  margin-top: 30px;
}
.g5{
  position: relative;
  top: 270px;
  right: 780px;
}
.g5 a{
  color: rgba(255,255,255,0.6);
}
.g5 a:hover{
  text-decoration: none;
}
.g6{
  margin-top: 50px;
}
.g3,.g6,.g7{
  text-align: center;
}
.d3 div{
  display: none;
}
.d3 .d8{
  display: block;
}
.f7{
  width: 110px;
  margin: 0 auto;
  font-size: 25px;
  font-weight: bold;
}
.f8{
  width: 30px;
  height: 5px;
  background: black;
  margin: 0 auto;
  margin-top: 50px;
}

.d ul li:hover img{
  transform: rotate(360deg);
  transition: all 1s;
}
.d ul li:hover .d2{
  color: #2d8cf0;
}

#fff{
  width: 40px;
  height: 100px;
  text-align: center;
  background: #2d8cf0;
  position: fixed;
  bottom: 300px;
  right: 0px;
  display: none;
  color: aliceblue;
}
#ff a{
  display: block;

  padding-top: 15px;
  text-decoration: none;
}
#fff:hover{
  background: #0501f3;
}
#ggg{
  position: absolute;
  top: 2650px;
  left: 850px;
  color: rgba(255,255,255,0.6);
}